In this research, adsorbtion of 2-(((1H-3-tetraazole)imino)methyl)-4-bromophenol (HTIMB) on mild steel (MS) surface in 0.5 M HCl solution and its corrosion inhibition effect was studied. The HTIMB was synthesized from the reaction between 3-amino-1-hydrogen-1,2,4-triazole and 5-bromo-2-hydroxybenzaldehyde in EtOH. The prepared compoun was characterized using standard spectroscopic methods(1H NMR, FT-IR and Uv-Vis). In order to determine the corrosion parameters in the metal-soluble interface and to evaluate the corrosion kinetic parameters and thermodynamic performance of the adsorption, the adsorption surface and the inhibition effect of the compound on the steel were investigated. for this purpose, a series of techniques, such as potentiodynamic polarization, gravimetric techniques, electrochemical impedance spectroscopy (EIS), atomic force microscopy (AFM) and scanning electron microscopy (SEM) were used. The results showed that as the concentration of HTIMB was increased the inhibition of mild steel in acidic environment was also increased. Also, as the temperature of acidic medium was reduced the corrosion inhibitive ability of HTIMB was increased. The SEM and AFM studies in HCl medium indicated that blocking of the active sites of mild steel was increased by adsorption of HTIMB on the steel surface. The structure of HTIMB Keywords: Inhibitor, Corrosion, Mild steel,Gravimetric method, Scanning electron microscopy References [1] M. Finšgara, J. Jackson, Corrosion Science, 2014, 86, 17 [2] A. Salima K, A. Wassan B, Kh. Anees A, International Journal of Industrial Chemistry, 2019, 10, 159 [3] A.S. Fouda, M. A. Diab, and S. Fathy, Int. J. Electrochem. Sci, 2017, 12, 347 [4] B. Tuzun, Cumhuriyet Sci J, 2019, 40, 396
